Home / 15,296.88-21,108.40-8,581.60

Finding the Fourth Proportional to 15,296.88, 21,108.40 and 8,581.60

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Solution

The fourth proportional to 15,296.88, 21,108.40 and 8,581.60 is: 11,841.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,296.88 : 21,108.40 = 8,581.60 : x
  2. Step 2: Convert to fraction form
    15,296.88/21,108.40 = 8,581.60/x
  3. Step 3: Cross multiply
    15,296.88x = 21,108.40 × 8,581.60
  4. Step 4: Simplify right side
    15,296.88x = 181,143,845.44
  5. Step 5: Solve for x
    x = 181,143,845.44/15,296.88
  6. Step 6: Final answer
    x = 11,841.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.